WeevilTrak Blog | GreenCast | Syngenta
Welcome to the WeevilTrak℠ blog, offering you updates about annual bluegrass weevil (ABW) from industry leading researchers. This blog will provide you with timely ABW activity across the north east as well as advice on scouting and controlling them using the Optimum Control Strategy.

Latest Posts: Dr. Terri Billeisen

Don’t panic, ABW season in North Carolina has not started in most areas…yet.

In fact, 2019 is currently shaping up to be very similar to 2018: initial warm-up in February followed by cooler temperatures and rain (in some areas) in March. Since we have not seen large numbers of adults in soap flushes yet this year, this post will contain predictions for early-season 2019 annual bluegrass weevil (ABW) activity and control recommendations based on what we observed in 2018.

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August Weevil Update for North Carolina

Despite adult count during increases the last week of July (record highs in some places), very little damage has been observed so far in August. In past years, the first week of August can be a busy time for annual bluegrass weevil (ABW) in Cashiers, North Carolina and mid-August for the Beech Mountain, North Carolina area, but this has not been the case so far in 2018.

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2018: The Year of Rain

2018 has been the year of rain. And currently, the forecast across the western part of North Carolina is calling for more rain over the next 10 days. As mentioned previously, annual bluegrass weevil (ABW) damage occurs immediately following heavy rainfall, so be sure to be extra vigilant over the next few weeks. Remember, August tends to be a very busy time for ABW in North Carolina.

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Be vigilant before ABW summer damage appears

Although there has been some rainfall out west, it is nothing compared to what we saw during the month of May. As mentioned in the previous blog post, severe annual bluegrass weevil (ABW) damage at both northern and southern sites followed almost immediately after the excessive rainfall observed last month.

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After the rain, comes the damage

The amount of rain western North Carolina has received the past month is record-breaking. And as we've seen in the past, when the rain starts to let up, annual bluegrass weevil damage appears almost immediately.

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If you haven’t already, brace yourself

It is so wet out there. So far in the month of May, we are more than three inches above the average amount of precipitation at multiple sampling sites—and they are calling for more rain next week! A lot of areas are completely saturated, and while that may temporarily slow adult activity, you should expect to see damage in the next week or so if you haven’t experienced it already.

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They’ve Finally Arrived

Been a long time coming, but annual bluegrass weevil (ABW) season is officially here. Because we are monitoring in completely different regions of western North Carolina and adult weevil timing differs so significantly between sites, the format for WeevilTrak in North Carolina is going to be different than in previous years.

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Fewer Weevils in North Carolina... For Now

If you have been keeping up with WeevilTrak blog posts from my colleagues, you may notice that, in the last few weeks, the general consensus is that weevil numbers and damage appears to be lower this year than in previous years. This is true both for the northeastern US and in North Carolina.

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All quiet on the western front

The last week of May was a very busy time in North Carolina in terms of ABW management. At both northern and southern sites, adult and larval numbers increased to levels beyond what we observed in 2015 and 2016. Since then, ABW numbers at all sites have decreased and we have not seen much evidence either in terms of damage or soap flush counts in the last four weeks to indicate any increase in adult activity.

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ABW Development Update: North Carolina

Although the weather has continued to throw us for a loop, particularly in northern North Carolina, temperatures have consistently stayed in the 60s or higher the last few weeks. Despite the occasional snow flurry, soil temperatures remain in the 60s, which is the most important temperature for weevil development and activity. As a result, bizarre fluctuations in weather have not had too much of an impact on weevil populations.

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